CN111238942A - Shield tail deformation monitoring device and construction method thereof - Google Patents
Shield tail deformation monitoring device and construction method thereof Download PDFInfo
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- CN111238942A CN111238942A CN202010218704.1A CN202010218704A CN111238942A CN 111238942 A CN111238942 A CN 111238942A CN 202010218704 A CN202010218704 A CN 202010218704A CN 111238942 A CN111238942 A CN 111238942A
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- shield tail
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 43
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 230000005641 tunneling Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 4
- 230000008439 repair process Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 5
- 239000002689 soil Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- Health & Medical Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to a shield tail deformation monitoring device and a construction method thereof, wherein the monitoring device is arranged in a gap between the inner wall of a shield tail and a duct piece, and comprises the following components: the springs are arranged at intervals, and one ends of the springs are fixed on the inner wall of the shield tail; the tension sensor is fixed at the other end of the spring and is arranged on the inner wall of the shield tail, and a set distance is reserved between the tension sensor and the end part, fixed on the inner wall of the shield tail, of the spring, so that the spring extends, and the tension sensor correspondingly obtains an initial tension value; when the shield tail deforms, the spring correspondingly extends or shortens, and then the tension sensor measures the tension variation of the spring so as to calculate the deformation of the shield tail. The method effectively solves the problem that the deformation of the shield tail of the shield machine is difficult to monitor, can continuously reflect the deformation of the shield tail of the shield machine in real time, and repairs the shield tail in time, thereby improving the construction efficiency and ensuring the construction quality.
Description
Technical Field
The invention relates to the field of building construction, in particular to a shield tail deformation monitoring device and a construction method thereof.
Background
At present, along with the development of society, more and more building projects need be gone on in the underground to the utilization of shield constructs improves greatly, however in the construction process of actual shield, owing to receive the influence of factors such as the soil body and shield advancing speed, the shield tail department of shield constructs produces the deformation easily, if the deflection is too big, can lead to the section of jurisdiction can't assemble the scheduling problem, perhaps can't continue normal construction even, seriously influences construction quality and construction progress.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a shield tail deformation monitoring device and a construction method thereof, solves the problem that the deformation monitoring at the shield tail of a shield machine is difficult, can continuously reflect the deformation of the shield tail of the shield machine in real time, and repairs the shield tail in time, thereby improving the construction efficiency and ensuring the construction quality.
The technical scheme for realizing the purpose is as follows:
the invention provides a shield tail deformation monitoring device, which is arranged in a gap between the inner wall of a shield tail and a duct piece, and comprises:
the springs are arranged at intervals, and one ends of the springs are fixed on the inner wall of the shield tail; and
the tension sensor is fixed at the other end of the spring and is arranged on the inner wall of the shield tail, and a set distance is reserved between the tension sensor and the end part, fixed on the inner wall of the shield tail, of the spring, so that the spring extends, and the tension sensor obtains an initial tension value of the spring;
when the shield tail deforms, the spring correspondingly extends or shortens, and then the tension sensor measures the tension variation of the spring so as to calculate the deformation of the shield tail.
The invention provides a shield tail deformation monitoring device, which is arranged in a gap between the inner wall of a shield tail and a duct piece, when the shield tail is deformed under stress, a spring correspondingly extends or shortens, a tension sensor is used for measuring the tension variation of the spring, and the deformation of the shield tail can be calculated through the variation, so that the influence of overlarge shield tail deformation on normal construction is prevented, the problem that the monitoring of the deformation at the shield tail of a shield machine is difficult is solved, the deformation of the shield tail of the shield machine can be continuously reflected in real time, and a pair of shield tails can be timely repaired, so that the construction efficiency is improved, and the construction quality is ensured.
The shield tail deformation monitoring device is further improved in that the shield tail deformation monitoring device further comprises fixing pieces which are fixed on the inner wall of the shield tail at intervals and arranged corresponding to the tension sensor, and the springs are arranged along the direction vertical to or parallel to the axial direction of the shield tail by fixing the springs between the tension sensor and the corresponding fixing pieces.
The shield tail deformation monitoring device is further improved in that a plurality of tension sensors are symmetrically arranged on the periphery of the fixing piece, so that initial tension values measured by the tension sensors are the same.
The shield tail deformation monitoring device is further improved in that four tension sensors are symmetrically arranged on the periphery of each fixing piece, and springs connected between the tension sensors and the fixing pieces are arranged in the directions parallel to and perpendicular to the axial direction of the shield tail and are staggered to form a cross shape.
The shield tail deformation monitoring device is further improved in that the tension sensor is electrically connected with a controller of the shield tunneling machine.
The invention provides a construction method of a shield tail deformation monitoring device, which comprises the following steps:
providing a monitoring device, fixedly installing one end of a spring on the inner wall of a shield tail, installing a tension sensor on the other end of the spring, and installing the tension sensor at a position, with a set distance, away from the fixed end of the spring on the inner wall of the shield tail, so that the spring extends and the tension sensor correspondingly obtains an initial tension value;
when the shield tail deforms, the spring correspondingly extends or shortens, the tension sensor is used for measuring the tension variation of the spring, and the deformation of the shield tail is calculated.
The construction method of the shield tail deformation monitoring device is further improved in that the shield tail deformation monitoring device further comprises a fixing piece which is fixed on the inner wall of the shield tail and corresponds to the tension sensor;
the spring is connected between the tension sensor and the corresponding fixing piece, so that the spring is arranged along the direction vertical to or parallel to the axial direction of the shield tail.
The construction method of the shield tail deformation monitoring device is further improved in that the plurality of tension sensors are symmetrically arranged on the periphery of the fixing piece, so that initial tension values measured by the plurality of tension sensors are the same.
The construction method of the shield tail deformation monitoring device is further improved in that four tension sensors are symmetrically arranged on the periphery of the fixing piece, and springs connected between the tension sensors and the fixing piece are arranged in the directions parallel to and perpendicular to the axial direction of the shield tail and are staggered to form a cross shape.
The construction method of the shield tail deformation monitoring device is further improved in that the tension sensor is electrically connected with a controller of the shield tunneling machine.
Drawings
Fig. 1 is a front sectional view of a shield tail deformation monitoring device in a use state.
Fig. 2 is a side sectional view of the shield tail deformation monitoring device in a use state.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, the invention provides a shield tail deformation monitoring device and a construction method thereof, the monitoring device is arranged in a gap between the inner wall of the shield tail and a duct piece, when the shield tail deforms under stress, a spring correspondingly extends or shortens, a tension sensor is used for measuring the tension variation of the spring, and the deformation of the shield tail can be calculated through the variation, so that the shield tail is prevented from deforming excessively to influence normal construction, the problem that the monitoring of the deformation at the shield tail of a shield machine is difficult is solved, the deformation of the shield tail of the shield machine can be continuously reflected in real time, and a pair of shield tails can be repaired in time, thereby improving the construction efficiency and ensuring the construction quality. The shield tail deformation monitoring device of the invention is explained below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a front cross-sectional view of a shield tail deformation monitoring device according to the present invention in a use state. The shield tail deformation monitoring device of the invention is explained with reference to fig. 1.
As shown in fig. 1, the shield tail deformation monitoring device of the present invention is installed in a gap between an inner wall of a shield tail 21 and a segment, and includes:
the springs 13 are arranged at intervals, and one ends of the springs are fixed on the inner wall of the shield tail 21; and
the tension sensor 11 is fixed at the other end of the spring 13 and is installed on the inner wall of the shield tail 21, and a set distance is reserved between the tension sensor 11 and the end part, fixed on the inner wall of the shield tail 21, of the spring 13, so that the spring 13 extends, and the tension sensor 11 obtains an initial tension value of the spring;
when the shield tail 21 deforms, the spring 13 correspondingly extends or shortens, and the tension sensor 11 measures the tension change of the spring 13 so as to calculate the deformation of the shield tail 21.
As a preferred embodiment of the present invention, the shield also includes a fixing member 12 fixed on the inner wall of the shield tail 21 at an interval and disposed corresponding to the tension sensor 11, and the spring 13 is fixedly connected between the tension sensor 11 and the corresponding fixing member 12, so that the spring 13 is disposed along a direction perpendicular or parallel to the axial direction of the shield tail 21.
Furthermore, a plurality of tension sensors 11 are symmetrically arranged around the fixing member 12, so that the initial tension values measured by the tension sensors 11 are the same.
Further, as shown in fig. 2, four tension sensors 11 are symmetrically disposed around each fixing member 12, and the springs 13 connected between the tension sensors 11 and the fixing members 12 are disposed in a direction parallel to and perpendicular to the axial direction of the shield tail 21 and are staggered to form a cross shape, so as to monitor the axial and radial deformation of the shield tail 21.
Preferably, the tension sensor 11 is electrically connected with a controller of the shield tunneling machine.
Preferably, a threshold value of the amount of change of the spring 13 may be set correspondingly, and an alarm may be issued when the amount of change of the spring 13 exceeds the set threshold value.
The specific implementation method of the invention is as follows:
a fixing piece 12 is fixedly installed at the center line of the inner wall of the shield tail 21, and four tension sensors 11 are symmetrically arranged around the fixing piece 12, that is, as shown in fig. 1, the tension sensors 11 are arranged on the left side, the right side, the front side and the rear side of the fixing piece 12, so that the fixing piece 12 and the tension sensors 11 are arranged in a cross shape;
a spring is connected between the tension sensor 11 and the fixing piece 12, and when the tension sensor 11 is arranged, the distance between the tension sensor 11 and the fixing piece 12 cannot be too far, so that the spring 13 is prevented from touching the duct piece;
when the shield tail 21 deforms under stress, the spring 13 correspondingly extends or shortens, the tension sensor 11 monitors the tension change and can measure the tension change, the deformation of the shield tail 21 can be calculated according to the tension change, and the shield tail 21 can be repaired according to the deformation, so that the shield tail 21 is prevented from deforming excessively to influence construction;
when the shield tail 21 is deformed by radial force, the spring 13 in the direction perpendicular to the axial direction of the shield tail 21 correspondingly extends or contracts, for example, the shield tail 21 is extruded and deformed by the upper and lower soil pressure, at this time, the springs 13 at the top and the bottom of the shield tail 21 are stretched by force, the springs 13 at the side of the shield tail 21 correspondingly contract, and the tension sensor 11 is used for monitoring the change of tension to determine the position of deformation and the magnitude of deformation;
when the shield tail 21 is deformed by axial force, the spring 13 in the direction parallel to the axial direction of the shield tail 21 correspondingly extends or contracts, for example, the stressed part of the shield tail 21 is arched, the spring corresponding to the arched part is stretched and lengthened, and the tension sensor 11 is used for monitoring the change of tension to determine the position of deformation and the magnitude of deformation;
the method can accurately measure the deformation of the shield tail 21, and the deformation of the shield tail 21 can be more accurately monitored by using a contact type sensor.
The invention also provides a construction method of the shield tail deformation monitoring device, which comprises the following steps:
providing a monitoring device, fixedly installing one end of a spring 13 on the inner wall of a shield tail 21, installing a tension sensor 11 on the other end of the spring 13, and installing the tension sensor 11 on the inner wall of the shield tail 21 at a position which is away from the fixed end of the spring 13 by a set distance, so that the spring 13 extends and the tension sensor 11 correspondingly obtains an initial tension value;
when the shield tail 21 deforms, the spring 13 correspondingly extends or shortens, the tension sensor 11 is used for measuring the tension variation of the spring 13, and the deformation of the shield tail 21 is calculated.
Further, the device also comprises a fixing piece 12 which is fixed on the inner wall of the shield tail 21 and is arranged corresponding to the tension sensor 11;
the spring 13 is connected between the tension sensor 11 and the corresponding fixture 12 such that the spring 13 is disposed in a direction perpendicular or parallel to the axial direction of the shield tail 21.
Further, the fixing member 12 is disposed at the center line of the inner wall of the shield tail 21;
the tension sensors 11 are symmetrically arranged around the fixing member 12, so that the initial tension values measured by the tension sensors 11 are the same.
Specifically, a plurality of tension sensors 11 are symmetrically arranged around the fixing member 12, so that initial tension values measured by the tension sensors 11 are the same.
Preferably, the tension sensor 11 is electrically connected with a controller of the shield tunneling machine.
The concrete operation mode of the construction method provided by the invention is as follows:
a fixing piece 12 is fixedly installed at the center line of the inner wall of the shield tail 21, and four tension sensors 11 are symmetrically arranged around the fixing piece 12, that is, as shown in fig. 1, the tension sensors 11 are arranged on the left side, the right side, the front side and the rear side of the fixing piece 12, so that the fixing piece 12 and the tension sensors 11 are arranged in a cross shape;
a spring is connected between the tension sensor 11 and the fixing piece 12, and when the tension sensor 11 is arranged, the distance between the tension sensor 11 and the fixing piece 12 cannot be too far, so that the spring 13 is prevented from touching the duct piece;
when the shield tail 21 deforms under stress, the spring 13 correspondingly extends or shortens, the tension sensor 11 monitors the tension change and can measure the tension change, the deformation of the shield tail 21 can be calculated according to the tension change, and the shield tail 21 can be repaired according to the deformation, so that the shield tail 21 is prevented from deforming excessively to influence construction.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. The utility model provides a shield tail deformation monitoring devices, its characterized in that, monitoring devices installs in the clearance of shield tail inner wall and section of jurisdiction, monitoring devices includes:
the springs are arranged at intervals, and one ends of the springs are fixed on the inner wall of the shield tail; and
the tension sensor is fixed at the other end of the spring and is installed on the inner wall of the shield tail, and a set distance is reserved between the tension sensor and the end part, fixed on the inner wall of the shield tail, of the spring, so that the spring extends, and the tension sensor obtains an initial tension value of the spring;
when the shield tail deforms, the spring correspondingly extends or shortens, and the tension sensor measures the tension variation of the spring so as to calculate the deformation of the shield tail.
2. The shield tail deformation monitoring device of claim 1, further comprising fixing members fixed to the inner wall of the shield tail at intervals and arranged corresponding to the tension sensor, wherein the spring is arranged in a direction perpendicular to or parallel to the axial direction of the shield tail by fixing the spring between the tension sensor and the corresponding fixing member.
3. The shield tail deformation monitoring device of claim 2, wherein a plurality of the tension sensors are symmetrically arranged around the fixing member, so that the initial tension values measured by the tension sensors are the same.
4. The shield tail deformation monitoring device of claim 3, wherein four tension sensors are symmetrically arranged on the periphery of each fixing piece, and the springs connected between the tension sensors and the fixing pieces are arranged in the directions parallel to and perpendicular to the axial direction of the shield tail and are staggered in a cross shape.
5. The shield tail deformation monitoring device of claim 1, wherein the tension sensor is electrically connected with a controller of the shield tunneling machine.
6. The construction method of the shield tail deformation monitoring device according to claim 1, characterized by comprising the following steps:
providing the monitoring device, fixedly installing one end of the spring on the inner wall of the shield tail, installing the tension sensor on the other end of the spring, and installing the tension sensor on the inner wall of the shield tail at a set distance from the fixed end of the spring, so that the spring is extended and the tension sensor correspondingly obtains an initial tension value;
and when the shield tail deforms, the spring correspondingly extends or shortens, the tension sensor is utilized to measure the tension variation of the spring, and the deformation of the shield tail is calculated.
7. The construction method of the shield tail deformation monitoring device according to claim 6, further comprising a fixing member fixed to the inner wall of the shield tail and disposed corresponding to the tension sensor;
and connecting the spring between the tension sensor and the corresponding fixing piece, so that the spring is arranged along the direction vertical to or parallel to the axial direction of the shield tail.
8. The construction method of the shield tail deformation monitoring device according to claim 7, wherein a plurality of tension sensors are symmetrically arranged around the fixing member, so that the initial tension values measured by the tension sensors are the same.
9. The construction method of the shield tail deformation monitoring device according to claim 8, wherein four tension sensors are symmetrically arranged around the fixing member, and springs connected between the tension sensors and the fixing member are arranged in directions parallel and perpendicular to the axial direction of the shield tail and are staggered in a cross shape.
10. The construction method of the shield tail deformation monitoring device according to claim 6, wherein the tension sensor is electrically connected with a controller of the shield tunneling machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010218704.1A CN111238942A (en) | 2020-03-25 | 2020-03-25 | Shield tail deformation monitoring device and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010218704.1A CN111238942A (en) | 2020-03-25 | 2020-03-25 | Shield tail deformation monitoring device and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111238942A true CN111238942A (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010218704.1A Pending CN111238942A (en) | 2020-03-25 | 2020-03-25 | Shield tail deformation monitoring device and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111238942A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031784A (en) * | 2020-09-04 | 2020-12-04 | 中铁隧道局集团有限公司 | Shield tail detection and repair method |
| CN116291495A (en) * | 2023-05-18 | 2023-06-23 | 中铁十四局集团大盾构工程有限公司 | Shield machine with shield tail stress monitoring system and method for preventing shield tail from deforming |
-
2020
- 2020-03-25 CN CN202010218704.1A patent/CN111238942A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031784A (en) * | 2020-09-04 | 2020-12-04 | 中铁隧道局集团有限公司 | Shield tail detection and repair method |
| CN112031784B (en) * | 2020-09-04 | 2022-04-22 | 中铁隧道局集团有限公司 | Shield tail detection and repair method |
| CN116291495A (en) * | 2023-05-18 | 2023-06-23 | 中铁十四局集团大盾构工程有限公司 | Shield machine with shield tail stress monitoring system and method for preventing shield tail from deforming |
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